Two travelling sinusoidal waves are described by the wave functions
Y1 = 55.00 sin[π(4.00x - 1200t)]
Y2 =55.00 sin[π(4.00x - 1200t - 0.250)]
where x, Y1 , and Y2 are in meters and t is in seconds. (a) What is the amplitude of the resultant wave function Y1, and Y2? (b) What is the frequency of the resultant wave function?